Melissa gave a good answer. Usually, a house will look better with SOME furniture in it. But you definitely want to remove all the clutter. You also don't want junky furniture in there.
The best person to give you advice would be a home stager.
836 N.Easton Rd.
She said this was to see how cluttered a place looked when filled.
First time I ever had a buyer angry about furniture not being present during a showing, but it exists.
My suggestion is a happy medium. Keep it at a minimum. No clutter, and keep the basic stuff behind.